but, of course, it's a good listener too. [ female announcer ] today cisco is connecting the internet of everything. so everything works like never before. [ female announcer ] today cisco is connecting the internet of everything. ♪ (train horn) vo: wherever our trains go, the economy comes to life. norfolk southern. one line, infinite possibilities. thanks for giving me your smile. thanks for inspiring me. thanks for showing me my potential. for teaching me not to take life so seriously. thanks for loving me and being my best friend. don't forget to thank those who helped you take charge of your future and got you where you are today. the boss of your life. the chief life officer. ♪ where does the united states get most of its energy? is it africa? the middle east? canada? or the u.s.? the answer is... the u.s. ♪ most of america's energy comes from right here at home. take the energy quiz. energy lives here. >>> welcome back to "the lead." i'm jake tapper. time for the world lead. he was a global icon for peace and nonviolence and his memorial service is obviously tomorrow. it'